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7129665 |
Control apparatus for feed driving system
A control apparatus for a machine that can be operated at high precision in a stable control state is provided by driving a movable body with control parameters suited to the mechanical state. A... |
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4600872 |
Apparatus for variable speed drive of an induction motor from a fixed frequency AC source
A control system for driving a variable speed AC motor employing a fixed frequency AC power source, combines pulses representative of a desired slip frequency with pulses of a frequency... |
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4013911 |
Displacement - electricity transducer
A displacement - electricity transducer contains a movable magnetic core and a fixed magnetic core oppositely arranged so as to have predetermined gaps or clearances in at least two places. Two... |
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3890516 |
Pulse producing devices
Pulse producing devices, particularly for use in ignition systems in road vehicles, include a pair of E-shaped cores with windings, and tracks on a movable part which influence flux flow between... |
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3760249 |
COARSE-FINE ANALOG POSITIONING SYSTEM
An accurate closed loop analog positioning system utilizing a linear sensor of the type employing a magnetic sensing element and a balance coil which acts basically as a transformer so as to... |
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3588660 |
MASTER-SLAVE PLURAL MOTOR POSITIONING CONTROL
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3480756 |
WELDING APPARATUS
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3477027 |
VARIABLE RELUCTANCE PICKOFF AND SWITCH TO SHORT CIRCUIT AN OUTPUT WINDING
1,172,075. Inductive transducers. ELLIOTT BROS (LONDON) Ltd. June 15, 1967 [June 18, 1966], No.27332/66. Heading G1N. In a variable reluctance transducer, comprising an E-shaped core having a... |
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3430134 |
WELD TRACKER SYSTEM HAVING MAGNETICALLY ISOLATED PICKUP COILS
1178164 Tracking welds; detecting flaws in welds MAGNAFLUX CORP 14 Feb 1967 [26 Aug 1966] 7134/67 Headings G3R R31G R4 and R9D In apparatus for testing a welded seam in a pipe 11 as the pipe is... |
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3265951 |
Position sensing system
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3259823 |
Pressure responsive apparatus
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3206975 |
Rate of altitude change sensor and rate of climb indicator control system
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3162795 |
Positioning system employing a transducing device having an integral torque generator
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3116468 |
Spherical coordinate proportional control device
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3068386 |
Numerical control positioning servosystem
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3028534 |
Variably damped servo-control system
971, 645. Measuring electrically. BENDIX CORPORATION. Feb. 27, 1961 [March 2, 1960], No. 7109/61. Heading G1N. In apparatus responsive to a variable, comprising a sensing device which produces an... |
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3005939 |
Precision angular indexing servosystem
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2945995 |
Variable damped, high gain, low phase shift two motor servo system
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2730664 |
Induction signal motor-operated differential transformer
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2602660 |
Rebalancing electromagnetic servo system
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2596732 |
Rebalancing servo system
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2553786 |
Gyrostabilizing system
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2524053 |
Direct coupled amplifier for servomotor systems
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2484022 |
Pick-off device for electrical control systems
This application is a continuation-in-part of copending application Serial No. 448,794, filed June 22, 1942, for Electrical control systems, now Patent No. 2,462,095 issued February 22, 1949,... |
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2462095 |
Rate circuits
This application is a division of copending application Serial No. 407,460, for Electrical control systems, filed August 19, 1941, now abandoned. This'invention relates to positional control... |
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2452609 |
Antihunt follow-up system
This invention relates to amplifiers suitable for use in electrical servo or follow-up systems, particularly systems designed to cause a powerdriven object to follow changes of position of a... |
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2448564 |
Motor control circuits
The present system is concerned with the art including apparatus for modifying control signals to produce time integrals or derivatives thereof, as in the control of ponderable objects and, more... |
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2445773 |
Rate taking circuit
This invention relates to rate taking circuits, and particularly to rate circuits adapted for use with alternating current follow-up systems, remote position repeating systems, and the like.... |
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2419979 |
Transformer pickoff
This invention relates to a pickoff of the transformer type which generates a signal responsive to the displacement of two relatively movable objects. The improved pickoff is particularly adapted... |
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2407657 |
Transformer pick-off
This invention relates to a pick off of the transformer type which generates a signal responsive to the displacement of two relatively movable objects. The improved pick off is particularly... |
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2139558 |
Follow-up system for gyro compasses
This invention relates, generally, to electrical follow-up systems, and the invention has reference, more particularly, to an electrical followup for remote control systems wherein the position of... |
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2088659 |
Phase shift control for three element electron tubes
This invention relates to the graduated contro of the phase on grid of three element electroi or thermionic tubes such as grid controlled gao filled rectifier tubes by which the output i: smoothly... |